I have a Chester 20 V mill and a few years ago I fitted Allendale glass scale DRO’s to it, it was a simple process, mine came with some very useful alloy brackets which can be tailored to fit the components, these were very useful. The preferred option for the X axis scale is to fit on the rear of the table but that would have restricted travel on the Y axis so I opted for the easy way out and fitted it across the front of the table, it means that you lose the table stops or you need to configure them in a different position, not a problem for me I just removed them as I didn’t need them, the table has very long travel so probably never need them anyway. I had no problems it was very straightforward.

Dave W

Yes – see my post including photos on a similar query about a WM16B, https://www.model-engineer.co.uk/forums/postings.asp?th=144000 . NB My mill is a standard WM16, not the belt drive WM16B version.

I had no significant problems fitting the kit, and I can now make a mess of things to a higher level of precision!

Martin

Hi Paul

Just gone out for a quick measure. The extruded aluminium section that covers the X magnetic strip and sensor:

• Protrudes 27mm max in front of the table
• Top is typically 6mm below the table surface
• Has an external radius on top front approx 10mm

I have not had any issues with a 150mm rotary table I had from RDG, which has, when mounted on the mill table conventionally on its main mounting surface with the rotab axis vertical and the handwheel at the front:

• Micrometer dial extends approx 1mm below table mounting surface at 110mm from table centre
• Handwheel extends approx 21mm below table mounting at 150mm from table centre

Hope this helps

Martin

PS  Please  contact me (forum or PM) if you want more details or photos

PPS Must also get round to posting details of my WM250 lathe fitting of MDRO Chester kit soon.

Edited for minor clarification (I hope) and addenda

Edited By Martin Whittle on 01/09/2019 20:37:22

Edited By Martin Whittle on 01/09/2019 20:50:03